Experts in Humidity & Moisture Control

Potting Compound Problems – Trouble with bubbles ?

A common problem associated with the production of polyurethane potting compounds is the formation of carbon dioxide bubbles within the polymer. These bubbles look unsightly, and they also lower the mechanical strength of the compound, leading to component failure, due to moisture ingress. To solve this problem, manufacturers of PU potting compounds typically use a Zeolite Powder such as 3A SUPERSIV, to absorb any water that may be present in the MDI, Polyol or filler components. Once this water has been dealt-with, the remaining raw materials will react with each other, to form a bubble-free potting compound. For those manufacturers who do not have the processing machinery required for the dispersion of fine powders into liquids, there is an alternative product which they can use called 3A SUPERSIV Paste. This is a pre-blended liquid, that manufacturers can just pour-in to their formulation. It’s simple to handle, and it mixes into polymers with create ease. If you would like to know more about this paste, then please click here.
To receive a free sample of Molecular Sieve Powder or Paste, then please click on the link here
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Alternatively, for further reading then please click one of the topics listed below:
Zeolite 3A for sale
Polyurethane finish problems
Molecular Sieve 3A

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